Question: Hellooo, I am a little confused with the answer given in ms. Can you explain it to me?

Question: Here's are my answers for the past year. I am not sure about 1. B), 2i) how to we find z for 98%, 3. How to compare with z again? Like what and where and II) the explanation if it's CLT, 4. I'm stuck. Like I got 2 equations but don't know how to sub them in, 6. The comparing of the test and quite blur about type 1 and 2 test.

Question: Why we integrate (x+1) twice? I saw the marking scheme like that.

Question: I tried referring textbook but still blur. Can you help me revise on this topic?

Question: How's confidence intervals again?

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